Lot of players say they dislike them (too fast/beast HP, sticky groups endlessly hitting your back while you run away, wave lasts long and give almost no points)

I like the concept of different and harder wave randomly happening, and i think the pb is just that there is only strong squels everywhere around, so here is my idea : replace the squeleton waves with a "normal" starting wave, but, for every normal ennemy killed, there's a squel spawning, with same caracteristics than now but very low HP. Like this the wave is still harder (more ennemies than usual), theres still squels in the place to face something different, and you face a mix of normal and squel ennemies. Is this possible? what you think about it?