i simply think that i like the mom system much betther, altough it is very old...heck i also like it betther then age of wonders or any similar... i want to make a comprehensive list for the devs - did i forget anything?:
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for me these things should change - also including some of your ideas:
- less champions (meaning all the wandering ressource champions)
- all champions should be suitable to fight and not just ressource champions that sit around once acquired, heck they should be primarly for fighting, ressrouces should be way less focus on with champions
- if there are ressource champions they should maybe have a bigger impact and a unique way to give you access to it - e.g. there is one merchant champion that gives you +10% gildar by setting up a traderout etc. - as written in an answer
- they should be integrated in a lively world within their own lives and not just 100's wander around
- they should all be very distinct, funny and rememberable - with unique picture/gear, skills etc.
- there should be much more skills and special attacks for the champions (reference here is again mom, which simply does a damn good job with their champion system)
- All champions should be (at least possibly after lvling up) "stronger" then the best unit you can build - hell these are champions!!
- the lvling system needs to be modified in a way that is more rewarding, maybe also give the lvls name as in mom (that was a lot of fluff for me when my champion became demi god wuahaha), and you should be able to obtain more experience through more quests, random monsters, find more items, prisoners, ressources, spells in lairs etc....