D&D- True sign I'm getting bored

That's right, when I get really bored I start thinking about D&D campaign ideas. The one that I'm throwing around in my mind is to steal some pre-created characters from a different game, that I know no one is going to recognize (unless really dedicated to dying brands).As a preface, I enjoy HoN, I think it's a fun game, but it's dying. I think more people should enjoy it and play it, but being honest, it's not that big of a deal, and it can easily be forgotten.With that out of the way, the 100+ heroes that could be NPC's or background characters in this war against good/evil.

https://www.heroesofnewerth.com/heroes/

The fun part about this is that the characters are pretty well set up, they all have interesting skill sets (although very limited), and they're interesting enough as characters that you could set them up as companions and NPC's. I don't know if I'd be willing to put in all of them, seeing as some of them have not so fantasy weapons like guns (Artillery, Engineer) but there are some nasty ones that I think would be halarious to see within a D&D setting.

Just think, trying to fight a Sand Wraith, or a Chronos in your D&D setting. There are some really nasty ones that can do just rediculous things, and when thinking about D&D I always think that it's a good thing to think outside of the box, and try something that isn't exactly your typical D&D Players handbook character and spells. Thanks to that book there are a lot of options, but the problem with it is that everyone who plays the game knows those options and prepares for them. You know exactly what a dragon should be doing, so you go in with meta-knowlede about what to prepare for. If you just tweak the dragon to be more of a Draconis with split fire, and the run away skill, there are some dangerous things that could come with that. Or even something as broken as TDL's ulti, or d-sham's ulti. There are some great mechanics and ideas for spells within HoN, and I just would like to see them transfered over to D&D for more fun and games.

Some notable characters-
Ando- ulti swap, also armor reduction/gain.
Magebane- it would require having to figure out what the equivalent of MP would be, but damaging spells/day is a great, dangerous, tool.
MQ- bouncing strikes. It's cleave, but without killing the target, and on ranged attacks.
Fayde- invisibility that can walk through all terrain, silly silly silly
Gemini- two in one!
Nomad- hit me and be countered, that's bound to make some headaches in the world of hack and slash.
Scout- invisibility and silence at the drop of a hat, that just makes stalking so easy.
Valk- big giant javelin that stuns you for rounds.
Zephyr- the more you kill, the more tornado's you have around you.
Sandwraith- illusions fighting everyone that you're against that you can port to. Not to mention, pure damage if you can hit them while in the sand, and hit back damage from attacking him.
Swiftblade- Spinning immune to spells, jumping around omnislash
TDL- silence, mass dark, charge and hit everything in path

And that's just the agi characters, you start looking into the int and str characters and the abilities and skills that they have get really fun in a D&D setting. Just for your consideration- Empath, Blacksmith, Thunderbringer, Glacius (what do you do for mana regen?), Parasite, Flux, Behemoth, Jhere, Pred, Pebbles, Solstice, Accursed, Devo, and Ra all quickly come to mind.

It's just an interesting idea, and a new way to spice up a D&D campaign. Take it for what it's worth.