It doesn't matter what airport you spot at. You will get used to whatever aircraft use your home airport. Here in MSP we have DC-9s, A320s, A319s, 727s, 737s, F28s, 717s, 757s, DC-10s, 747's, MD-8X's, Avro's, RJ's etc....
However, 80% of the above are all in the NW color scheme with a smattering of AA, UA, ATA, Sun Country, DL, HP, TW, CO and KLM thrown into the mix.
How I would love to see an A321, A330, A340, 767 or 777 thrown into the mix from a new airline. As it was, a Planet Airways 727-100 and a Midwest Express DC-9 were surprising and welcome visitors on my last spotting trip MSP.
Bottom line is people tend to become complacent with what they have. Try varying your spotting routine. Sometimes I'll take a camera and take still photos, sometimes I'll take a scanner and listen in on ATC or sometimes I'll grab the camcorder and take videos or sometimes I'll go with nothing and just watch.
Perhaps one of my most recent and memorable spotting trips consisted of standing directly under the 12R approach path while a string of DC-10's landed. It was the first time I heard the whine and felt some wind from their wake vortices.
Also, PIT, DTW, CMH, DAY and CVG are not far from KCLE and could make a neat day trip. Trust me, I was an airliner nut from about age 5 and my home airport was CAK. Of course there were a few more 727s and 737s than there is now and they had Eastern & Piedmont there. I can remember whining until someone in my family drove me up to CLE for a day of spotting when UA was the main carrier and can remember how huge it seemed compared to CAK. And by the way, Yes I was such a good whiner at a young age that I made it DTW, PIT, DAY, CMH, CVG as well.